Single hydraulic spring hinge eyeglasses



FIG. 1 is a perspective view of a single hydraulic spring hinge eyeglasses, showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a right side elevational view when viewed from the front, the other side being a mirror image;

FIG. 5 is a top plan view; and,

FIG. 6 is a bottom plan view. 

The ornamental design for a single hydraulic spring hinge eyeglasses, as shown and described. 